While at a club, a young mother is sexually assaulted. When she tries to get away from her attackers and get safely into her car, she is beaten up and her car stolen. When the suspects find out that there is a baby in the car, they toss the nine month old out the door. When they are brought into the hospital to get checked out, they find that Samantha had drugs in her system, which she was unknowingly passing on to her baby while breast feeding. The Detectives of the Special Victims Unit are now on the investigation to find out where the drugs came from and who was so interested in hurting Samantha and her baby.
I like episodes like this where they start out with one possible crime and it spins off into something completely different and the Detectives have to go from one suspect to the next until they find the one person who is really behind it all.